Binder for loose-leaf files



April 5,1927. 1,823,145

N. s. WELK BINDER FOR LOOSE LEAF FILES flicrl.

Filed March 1923 Patented Apr. 5, 1927.

UNITED STATES,

PATENT OFFICE.

NELSON S. WELK, 0F ATHENS, OHIO, ASSIGNOR TO THE McBEE BINDER COMPANY, ATHENS, OHIO.

BINDER FOR LOOSE-LEAF FILES.

Application filed March 29, 1923.

My invention relates to the art of book binding, and particularly as applied to loose leaf filing devices, and has for its object to provide new and novel means for not only quickly and easily accomplishing the purpose of inserting or withdrawing leaves from the tile, but also to provide a construction that will add stability to the binding posts, and tend to strengthen, rat-her than weaken, the same.

My invention consists of certain details of construction hereinafter set forth, pointed out in my claims and illustrated in the accompanying drawings in which Fig. 1 shows a top view of a loose leaf binder fitted out with my device;

Fig. 2 shows a plan View of my device, the top plate being removed to disclosethe construction and method of operation of the parts;

Fig. 3 shows a sectional view taken on the line 33 in Fig. 2; and

Fig. 4 shows a sectional view taken on the line 44 in Fig. 2.

Referring to the accompanying drawings the reference numeral 10 is used to indicate the lower cover of a loose leaf file to which are secured a plurality of upwardly projecting posts 11, to receive the perforated file sheets 12. To the upper cover 13 I have secured a flat tubular member or clamping bar 14, slotted at 15 to register with the posts, said slots projecting inwardly from the outer edge surface of the member. A slidably mounted plate 16, provided with re cesses 17 to register with, but much wider than, the slots 15, is secured in proper relationship within the member 14, the construction being such that when the plate is positioned at one end of its limit of move ment the post receiving slots will be perfect- 1y clear and free to receive the posts. Inclined flat lock springs 18 are secured to the sliding plate and so mounted that when the member 14 has been placed on the posts which are fitted within their respective slots, andthe plate moved laterally (in its slidable movement operation) the springs will contact and abut against their respective posts, the tension of the spring providing pressure for them to firmly grasp the posts.

Serial No. 628,425.

Also these springs are inclined (as shown in Fig. 3) and so mounted as to engage the opposite side of the posts from the side engaging the member 14 at the inner ends of the slots in such a manner that the spring contacting the post is forced into a further inclination, thus increasing the tension of the spring in its engagement against the post, and this arrangement, obviously, forms a sure and satisfactory locking device.

Means 19 consisting of a shaft secured tothe plate 16 projecting through a longitudinal slot in the plate 14 and provided with enlarged operating head or button for causing the slidin movement of the plate are provided, as s own. 1

In the drawings I have illustrated the preferable construction I use, but it is obvious this may be changed and altered in its details without affecting my invention and I do not desire to be understood as limiting my invention except as set forth in the appended claims.

Having thus described my invention what I claim and desire to secure. by Letters Patent of the United States, is:

1. A binder 'for loose leaf files comprising a lower cover with binding posts secured thereto, a slotted member to be fitted over said binding posts, a sliding member secured to the slotted member and springs thereon inclining upwardly from the horizontal to engage the posts and lock them to the slotted member, when the sliding member is moved in one direction.

2. A binder for loose leaf files comprising a lower cover and binding posts extending upwardly therefrom; an upper cover; a slotted member, to fit over the binding posts, secured to the upper cover; plate slidably secured to'the slotted member; flat springs, their inner longitudinal edges being elevated, positioned onsaid plate in such manner that when the plate is moved to one position they will not extend into, or across, the slots but when the plate is moved to its other position the springs will be thrust across their respective slots and engage the posts so as to firmly lock them to the slotted member.

NELSON s. WELK', 

